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(No Model.)

r J. LANGUEREAU.

HOLDER FOB INGANDESOENT ELECTRIC LAMPS N0. 293,256. Patented :Feb. '12, 1884.

Fhnlo-Lilhognphar. Wuhinglon. D. C.

ATE Ni rrrcn.

JEAN LANGUEREAU,

or PARIS, FRANCE.

HOLDER FOR INCANDESCENT ELECTRIC LAMPS.

SPECIFICATION forming part of Letters Patent No. 293,256, dated February 12, 1884:.

Application filed July 523, 1883. (No model.)

To all 1072 0772, it may concern:

Be it'known that I, JEAN LANGUEREAU, a

citizen of the Republic of France, residing at scription of the same. IO

According to my invention I use electric incandescent lamps of quite small dimensions, and mount the same upon a tubular support or holder of peculiar construction, the same presenting in a more or less perfect manner the appearance of an ordinary candle. This holder is so arranged that it permits the lamp to bemounted and removed with great facility, and that the conducting-wires may be concealed from view. It will be seen that this system of mountin g incandescent electriclamps is particularly intended for application to the chandeliers, girandoles, &c., now in use, the

advantage being that the forms and ordinary arrangements of such fixturesdo not require any changes.

The accompanying drawings form a part of this specification, and represent what I considerthe best means of carrying out my invention.

Figure 1 is a central vertical section of my improved holders, showing a lamp in position. Fig. 2 is a horizontal section on the line as m, Fig. 1. Fig. 3 is an elevation of the lamp detached.

On these drawings, a is a tubular holder, which may be made of porcelain, earthenware, opaque glass, or of metal, or any other suitable material capable of being painted or enameled, andwhich may,in shape, size, and color, form as nearly as may be an imitation of an ordinary candle. This holder or carries at its top a verysmall incandescent lamp, Z2, and its lower end is screwed or otherwise firmly fastened in the socket c, which forms the extremity of a chandelier-arm, orof any other fixture or device such are used for supporting candles. The upper part of the tubular holder is provided with a metallic ring, (I, secured by cementing or other suitable means, and the lamp 72 carries also a metallic ring, 0, similarly secured, which may be locked into the former by means of a bayonet-joint, as clearly shown in Figs. 1 and 2; or any other suitable means may be provided for locking the ring a into the ring d. The lower part of the holder at is provided with a metallic socket, f, secured by cementing or otherwise, which is secured upon a correspondingly-threaded length of pipe, h, arranged centrally in the socket c. The tubular holder a is provided at or near the middle of its length with an internal flange, k, which forms a bearing-point for a spiral spring, '5, the'object of which is to support the piece j. This piece 3' is made of insulating material, the conducting-wires g passing through the same, and upon it is arranged in the ordinary manner the lamp b-that is to say, the conducting-wires g terminate in small hooks, to which the lamp is connected, as shown at i in Fig. 1, the coiled spring i above the piece 7' preserving the proper electric contact by the upward tension which it exerts on the lamp b, as will be'understood. As soon as the lamp 1) is sufficiently turned to disconnect the bayonet-joint, the springs i i push said lamp out of the holder a, andthe piece j also rises until it is arrested by the flange of the ring d, with the ends of the wires 9 projecting out so as to be easily accessible, thus permitting an examination of'the lamp, and, if required, its removal and the substitution of another.

The interior of the tube a, below the flange It, forms ahollow, in which is arranged a sufficient length of conducting-wire, g, to allow theremova-l of the lamp and of the connected piece j, when required. the tubular holder to openings m, through which, when it is impossible to completely conceal the conducting-wires in the arms and other parts of the chandelier or other fixtures by passing them through the pipe h, said wires may emerge from the tube to be led along the exterior contours of the arms of the chande liers or other fixtures.

It will seen that by removing from the socket 0 the pipe h and plate or upon which the base of the tubular holder a rests, this socket 0 may receive ordinary candles, no modification whatever being necessary in the general arrangement of the chandelier or other fixture to which this system of lighting by electricity has been adapted.

I form at the base of It will be understood that the invention may be used in connection with any ordinary or desired style of incandescent lamp.

I claim as my invention 1. The tubular holder a, having at its lower end a threaded portion, f, in combination with the socket 0, having a removable plate, a, and a central pipe, h, for receiving said portion f,

all arranged substantially as and for the purposes specified.

2. The tubular support a and inclosed spiral spring 7; and piece j, in combination with an incandescent lamp, 6, suitable means for fastening the latter upon the holder a, and suitable means for connecting the same to the conductor, the piece 9 being loeatedbelow the upper end of the spiral spring, so as to permit the upper portion of spring to exert an upward tension on'the lamp, as and for the purposes herein specified.

3. The tubular support a, having an internal flange, k, dividing the space into two parts,-

low the conducting-wiresto be led from the exterior into and up through the hollow space of the support to the lamp 12, substantially as herein specified.

In testimony whereof I h ave signed this specification in the presence of two subscribing witnesses.

JEAN LANGUEREAU.

itn esses:

EUG. Donors, A, @HENAULT. 

